During the televised broadcast for the annual music competition that aired on BBC One and Peacock, the Princess of Wales performed piano as part of a pre-recorded introduction ahead of the event’s final performances.

Footage of the performance was shared on the official Instagram account of the Prince and Princess of Wales. “A #Eurovision surprise,” the post’s caption read. “A pleasure to join @kalush.official in a special performance of last year’s winning @eurovision entry. Enjoy the show, Liverpool.”

The princess, who is married to William Prince of Wales, was shown performing from the Crimson Drawing Room of Windsor Castle.

Usually, the country that won the previous year’s competition serves as host, but this year’s Eurovision takes place in Liverpool in the U.K., due to security concerns with holding the event in Ukraine following Russia’s invasion of the nation.